The $70K of withholding covers both State and Federal so not all of that should show up in Box 2.
I'll bet you $100 and give you odds that eBay got it right. It's hard to know how much "regular" (i.e., non-RSU) withholding should have occurred since that's a function of your W-4 but $80K on $170K GROSS income sounds WAY TOO HIGH. That's a 47% withholding rate on GROSS income.
Check with your payroll department.
Tom Young
